Improvement



` i. A. DAYTON.

Machine for Polishing Moldings.

No 165 073,L Paieniediunkezmi.

' `fg'y WITJVESSES f INVENTOR qi, im M5 wat By Attal-wy ments in polishing-machines for 'justable inside of said frame.

'UNITED iii-- ATENT FFICE@ JOHN A. DAYTON, or BROOKLYN, NEW YORK.

g Specification forming part of Letters Patent No. 165,073, dated June 29, 1875; application filed May 7, 1875.

.To all whom it may concern;

Be it known that I, JOHN A. DAYTON, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Machines for Polishing Moldings, of which the following is a specification:

This invention relates to certain improvepolishing moldings and other like articles.

The object of the invention is to adapt the apparatus to polishing articles of various thicknesses, and cause the polishing1 rubber or pad to give or adjust itself' to the inequalities or irregularities of the article, imitating, to some extent, the action of the hand in polishing.

My invention consists of a novel construction and combination of parts, which will be fully hereinafter described, and specifically pointed out in the claims, and a preliminary description is therefore not deemed essential.

In the accompanying` drawing, Figure 1 is a vertical longitudinal section of my improved machine taken in the line mx of Fig. 2. .Fig. 2 is a top view. Fig. 3 is a vertical transverse section taken in the line y y of Fig. 2. Fig. 4 is a perspective view of the polisher.

A represents the frame of Vthe machine, in the upper part of'which is the bed or table B, which is arranged so as to be vertically ad- On the under side of the bed or table B are a number of wedge-shaped blocks or inclined planes, b, corresponding in number and position with a number of inclined planes, c, on the upperside of a frame, C, arranged within the mainframe A, the upper inclined planes running in one directiomand the lower ones in an opposite direction. The frame C rests ou supports attached to the side pieces of the main frame, and is provided with guides for maintaining it in proper position in the frame. At one end of the frame A is a screw, D, passing through the end piece of the main frame, and engaging with the end piece of the frame C. The bed or table B works in the mainframe, so that it may be made to rise and fall therein. The

. inclined planes b rest directly upon the inclined planes c, and the bed or table is thereby supported in place. Feed-rolls F F are journaled in bearings attached to the bed or table, so as to rise and fall therewith, and are arranged to protrude through openings in the table sufficiently far above the surface to engage with the work. Immediately over these feed-rolls are similar rolls G G, journaled in bearings attached to the bed or table. The lower rolls are driven by belting P1 P2, and the upper rolls turn by friction. The beltP2 is provided with a belt-tightener, P3. The faces of the rollers iF F G G are covered with rubber or other suitable material, sufficiently thick and elastic to insure their proper engagement with the work without injuring or marring the same. The lower rollers, being attached to the bed or table, always maintain the same position with relation thereto. The journal-bearings of the upper rolls are adjustable up or down, in order that the pressure of the lrollers may be made to correspond with that of the polisher, when one polisher is substituted for another of different thickness, or when the polishes has become worn.

The polisher lmay be the same as that ,described in Letters Patent No. 151,847, granted to George G. Cochrane and myself', June 9, 1874; or it may be made of anyother suitable material with a polishing-surface.

As shown herein, the polisher h is attached to a holder or stock, H, by glue or otherwise, and has a rubber pad or cushion, t', interposed between it and the stock or holder to render it elastic. The polisher, or the stock H to which it is attached, is pivoted to a carryingframe, J, by means of screw-pivots i2 working in slots in the frame in such a manner as to permit it to oscillate in a direction transverse to its line of travel, in order that it may adj ust itself to the work. The frame J is arranged to reciprocate in ways or guides at the upper portion of the main frame A. At one end of the main frame is journaled the main shaft K, which is driven by a belt from the drivingpower. At the ends of the shaft K are crankwheels l, connected by pitnien M with the polisher-carrying frame J, so that as the shaft revolves the frame is reciprocated back and forth. The shaft K is connected by belts with the shaft P3, so as to turn said roller with the desired speed, and impart motion to the lower roll.

' The molding m or other work to be polished is fed in at one end of the machine, passing between the feed-rollers and under the polisher. Then by turning the screw D so as to draw the frame C toward the feed end of the machine, the inclined planes c pass under the inclined planes b, and raise the bed or table B until the required pressure is obtained upon the work between the feed-rollers and between the polisher and the bed or table. As the shaft revolves it imparts a reciprocating motion to the polisher, and a rotary motion to the feed-rollers, so that as the work is polished it is fed along by the rollers. Adjustable guides may be used on the table B for the purpose of guiding the work thereon. By turning the screw'D in au opposite direction to that described above, the frame C is moved backward so as to allow the bed or table to descend.

By the construction4 and arrangement of parts in this machine, the polisher-carrying frame has a reciprocating motion only, While the pressure upon the work is produced from below by the vertical adjustment of the bed or table, through the operation of the frame C and the inclined plane.

The table may be adjusted to accommodate i moldings or work of different thicknesses, and

the movement is gradual and uniform throughout.

By feeding the polishing material down through the polishing-block, and having it present at all times during the polishingaction, the polishing material will keep the polishingblock from being coated or glazed with the guinmy or other matter present in the material acted upon, which is a desideratum of the greatest importance, as the constant renewal and redressing of the polisher is avoided. This machine will also be found eminently useful in polishing or scouring any wooden 0r metal surface, and will be 'founda practical apparatus .for removing glue and other foreign substances from the surface of veneered molding, as all glue will be removed from the surface and a rich polish imparted.

, Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination of the vertieally-adjust able bed B and the reciprocating carrier H, provided with the polishing-stock h, and pivoted within a carrying-frame, J, whereby the said carrier and its polishing-stock may be oscillated within the carrying-frame in a direction transverse to its line of travel, as and for the purpose specified.

2. The combination, with the reciprocating polisher, of the bed B, having inclined planes b, and the vertically-adjustable rollers Gr G, of the frame G, having the inclined planes c, and the operating screw D, for adjusting said frame to elevate or lower the bed B, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand.

JOHN A. DAYTON.

Witnesses JN0. D. PATTEN, Jos. L. GooMBs. 

